The image represents the Chariot of the Sun witch in the late Roman mythology was called Sol Invictus: the Invincible Sun

This SteamPunk version in more like a bicycle with clocklike gears that could make it fly...but as you can see the Sun is sunk in darkness and there is nobody that rides it.
The irony is that it still flies but it’s a fake!

The moral behind the image is that in dark times the Sun is still invincible, but not because it can’t be conquered, but because it can’t be ridden!